#include <unistd.h>
#include <stdio.h>
//  no err for redefinition
//  shoud add dlsym  ,or  sleep will recursion here 
//unsigned int sleep(unsigned int sec)
//{
//printf("%d",sec);
//sleep(sec);
//}

int main()

{

 sleep(5);
printf("rlt");
return 0;
}
